package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.OrderDetailMapper;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.mapper.UserMapper;
import com.sky.result.PageResult;
import com.sky.service.AddressBookService;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * TODO
 *
 * @Author mr.zhao
 * @Date 2025/5/27 10:21
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
	@Autowired
	private OrderMapper orderMapper;

	@Autowired
	private AddressBookService addressBookService;

	@Autowired
	private ShoppingCartMapper shoppingCartMapper;

	@Autowired
	private OrderDetailMapper orderdetailMapper;

	@Value("${sky.shop.address}")
	private String shopAddress;

	@Value("${sky.baidu.ak}")
	private String ak;
	/**
	 * 用户下单
	 *
	 * @param dto
	 * @return
	 */
	@Transactional(rollbackFor = Exception.class)
	@Override
	public OrderSubmitVO submitOrder(OrdersSubmitDTO dto) {
		//异常情况的处理(收获地址为空,超出配送范围,购物车为空)
		AddressBook addressBook = addressBookService.getById(dto.getAddressBookId());
		if (addressBook == null){
			throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
		}

		//检查用户的收获地址是否超出配送范围
		// checkOutOfRange(addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail());

		Long userId = BaseContext.getCurrentId();
		ShoppingCart shoppingCart = new ShoppingCart();
		shoppingCart.setUserId(userId);

		//查询当前用户的购物车数据
		List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
		if (shoppingCartList ==null || shoppingCartList.size() == 0){
			throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
		}

		//构造订单数据
		Orders order = new Orders();
		BeanUtils.copyProperties(dto,order);
		order.setPhone(addressBook.getPhone()); //手机号
		order.setAddress(addressBook.getDetail()); //地址
		order.setConsignee(addressBook.getConsignee()); //收货人
		order.setNumber(String.valueOf(System.currentTimeMillis())); //订单号
		order.setUserId(userId); //用户id
		order.setStatus(Orders.PENDING_PAYMENT); //订单状态,代付款
		order.setPayStatus(Orders.UN_PAID); //支付状态,未支付
		order.setOrderTime(LocalDateTime.now()); //下单时间

		//向订单表插入一条数据
		orderMapper.insert(order);

		//订单明细数据
		List<OrderDetail> orderDetailList = new ArrayList<>();
		for (ShoppingCart cart : shoppingCartList) {
			OrderDetail orderDetail = new OrderDetail();
			BeanUtils.copyProperties(cart,orderDetail);
			orderDetail.setOrderId(order.getId());
			orderDetailList.add(orderDetail);
		}

		//向明细表中批量插入数据
		orderdetailMapper.insertBatch(orderDetailList);

		//清理购物车中的数据
		shoppingCartMapper.deleteByUseId(userId);

		//封装返回数据
		OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder().id(order.getId())
				.orderNumber(order.getNumber())
				.orderAmount(order.getAmount())
				.orderTime(order.getOrderTime())
				.build();
		return orderSubmitVO;
	}

	@Autowired
	private UserMapper userMapper;

	@Autowired
	private WeChatPayUtil weChatPayUtil;

	@Autowired
	private WebSocketServer webSocketServer;
	/**
	 * 订单支付
	 *
	 * @param ordersPaymentDTO
	 * @return
	 */
	@Override
	public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
		//当前登录用户id
		Long userId = BaseContext.getCurrentId();
		User user = userMapper.getById(userId);

		//订单号
		String orderNumber = ordersPaymentDTO.getOrderNumber();

		//调用微信支付接口,生成预支付交易单
		/*JSONObject jsonObject = weChatPayUtil.pay(
				ordersPaymentDTO.getOrderNumber(), //商户订单号
				new BigDecimal(0.01), //支付金额,单位元
				"苍穹外卖订单", //商品描述
				user.getOpenid() //微信用户的openId
		);

		if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")){
			throw new OrderBusinessException("该订单已支付");
		}*/

		// JSONObject jsonObject = new JSONObject();
		// jsonObject.put("code","OPDERPAID");
		// OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
		// vo.setPackageStr(jsonObject.getString("package"));

		//为替代微信支付成功之后的数据库订单状态更新,多定义一个方法进行修改
		//Integer OrderPaidStatus = Orders.PAID; //支付状态,已支付
		//Integer OrderStatus = Orders.TO_BE_CONFIRMED; //订单状态,待接单

		//发现没有将支付时间 check_out属性赋值,所以在这里更新
		// LocalDateTime check_out_time = LocalDateTime.now();
		//
		//获取订单号码
		// String orderNumber = ordersPaymentDTO.getOrderNumber();
		//
		//调用updateStatus,用于替换微信支付更新数据库状态的问题
		// paySuccess(orderNumber);
		// orderMapper.updateStatus(OrderStatus,OrderPaidStatus,check_out_time,orderNumber);
		// return vo;
		//这里我们需要根据订单号查询订单，需要创建一个对象去数据库查询，而且最后我们更新这个对象属性，再使用update就ok
		Orders order = orderMapper.getByNumberAndUserId(orderNumber,userId);
		order.setPayStatus(Orders.PAID);
		order.setStatus(Orders.TO_BE_CONFIRMED);
		order.setCheckoutTime(LocalDateTime.now());
		orderMapper.update(order);

		//我们接口返回的数据，可以看一下属性类的结构，里面的数据都是最后调用微信支付使用到的，我们用不到那里，直接返回空数据就行
		OrderPaymentVO vo = new OrderPaymentVO();

		//
		Map map = new HashMap();
		map.put("type", 1);//消息类型，1表示来单提醒
		map.put("orderId", order.getId());
		map.put("content", "订单号：" + ordersPaymentDTO.getOrderNumber());

		//通过WebSocket实现来单提醒，向客户端浏览器推送消息
		try {
			webSocketServer.sendToAllClient(JSON.toJSONString(map));
		} catch (Exception e) {
			log.info("异常信息{}",e);
			e.printStackTrace();
		}
		log.info("向管理端推送{}订单消息", ordersPaymentDTO.getOrderNumber());
		///
		return vo;
	 }



	/**
	 * 支付成功，修改订单状态
	 *
	 * @param outTradeNo
	 */
	@Override
	public void paySuccess(String outTradeNo) {
		//当前登录用户id
		Long userId = BaseContext.getCurrentId();

		//根据订单号查询当前用户的订单
		Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);

		//根据订单ID更新订单的状态,支付方式,支付状态,结账时间
		Orders orders = Orders.builder()
				.id(ordersDB.getId())
				.status(Orders.TO_BE_CONFIRMED)
				.payStatus(Orders.PAID)
				.checkoutTime(LocalDateTime.now())
				.build();

		orderMapper.update(orders);
		//////////////////////////////////////////////
		Map map = new HashMap();
		map.put("type", 1);//消息类型，1表示来单提醒
		map.put("orderId", orders.getId());
		map.put("content", "订单号：" + outTradeNo);

		//通过WebSocket实现来单提醒，向客户端浏览器推送消息
		webSocketServer.sendToAllClient(JSON.toJSONString(map));
		///////////////////////////////////////////////////
		}

	/**
	 * 历史订单查询
	 *
	 * @param dto
	 * @return
	 */
	@Override
	public PageResult page(int pageNum, int pageSize, Integer status) {
		PageHelper.startPage(pageNum,pageSize);

		//分页条件查询
		OrdersPageQueryDTO dto = new OrdersPageQueryDTO();
		dto.setUserId(BaseContext.getCurrentId());
		dto.setStatus(status);
		Page<Orders> page = orderMapper.page(dto);

		List<OrderVO> list = new ArrayList<>();

		//查询订单明细,并封装orderVo进行响应
		if (page != null && page.getTotal()>0){
			for (Orders orders : page) {
				Long orderId = orders.getId(); //订单ID

				//查询订单明细
				List<OrderDetail> orderDetails = orderdetailMapper.getByOrderId(orderId);
				OrderVO orderVO = new OrderVO();
				BeanUtils.copyProperties(orders,orderVO);
				orderVO.setOrderDetailList(orderDetails);

				list.add(orderVO);
			}
		}
		return new PageResult(page.getTotal(),list);
	}

	/**
	 * 查询订单详情
	 *
	 * @param id
	 * @return
	 */
	@Override
	public OrderVO details(Long id) {
		//根据ID查询订单
		Orders orders = orderMapper.getById(id);

		//根据orderID查询订单详情
		List<OrderDetail> orderDetailList = orderdetailMapper.getByOrderId(orders.getId());

		//封装返回数据
		OrderVO vo = new OrderVO();
		BeanUtils.copyProperties(orders,vo);
		vo.setOrderDetailList(orderDetailList);

		return vo;
	}

	/**
	 * 取消订单
	 *
	 * @param id
	 */
	@Override
	public void userCancelById(Long id) throws Exception {
		//根据ID查询订单
		Orders ordersDB = orderMapper.getById(id);

		//校验订单是否存在
		if(ordersDB == null){
			throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
		}

		//订单状态
		if (ordersDB.getStatus() > 2){
			throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
		}

		Orders orders = new Orders();
		orders.setId(ordersDB.getId());

		//订单处于接单状态下取消,需要进行退款
		if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
			//调用微信支付退款接口
			// weChatPayUtil.refund(
			// 		ordersDB.getNumber(), //商户订单号
			// 		ordersDB.getNumber(), //商户退款单号
			// 		new BigDecimal(0.01),//退款金额，单位 元
			// 		new BigDecimal(0.01));//原订单金额

			//模拟退款逻辑(替代真实的微信退款)
			String refund = "模拟退款成功: 订单号=" + ordersDB.getNumber() + ", 金额=" + ordersDB.getAmount();
			//支付状态修改为退款
			orders.setPayStatus(Orders.REFUND);
		}

		//更新订单状态,取消原因,取消时间
		orders.setStatus(Orders.CANCELLED);
		orders.setCancelReason("用户取消");
		orders.setCancelTime(LocalDateTime.now());
		orderMapper.update(orders);
	}

	/**
	 * 再来一单
	 *
	 * @param id
	 */
	@Override
	public void repetition(Long id) {
		//查询当前用户id
		Long userId = BaseContext.getCurrentId();

		//根据订单id查询当前订单详情
		List<OrderDetail> orderDetailList = orderdetailMapper.getByOrderId(id);

		//将订单详情对象转为购物车对象
		List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
			ShoppingCart shoppingCart = new ShoppingCart();

			//将原订单中的菜品信息复制到购物车中
			BeanUtils.copyProperties(x, shoppingCart, "id");
			shoppingCart.setUserId(userId);
			shoppingCart.setCreateTime(LocalDateTime.now());

			return shoppingCart;
		}).collect(Collectors.toList());

		//将购物车对象批量添加到数据库
		if (!CollectionUtils.isEmpty(shoppingCartList)){
			shoppingCartMapper.insertBatch(shoppingCartList);
		}

	}

	/**
	 * 订单搜索
	 *
	 * @param ordersPageQueryDTO
	 * @return
	 */
	@Override
	public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
		PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
		Page<Orders> page = orderMapper.page(ordersPageQueryDTO);
		// 部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
		List<OrderVO> orderVOList = getOrderVOList(page);

		return new PageResult(page.getTotal(),orderVOList);
	}

	private List<OrderVO> getOrderVOList(Page<Orders> page) {
		//需要返回订单菜品信息,自定义orderVo响应结果
		List<OrderVO> orderVOList = new ArrayList<>();

		List<Orders> ordersList = page.getResult();
		if (!CollectionUtils.isEmpty(ordersList)){
			for (Orders orders : ordersList) {
				//将共同字段赋值到orderVo
				OrderVO orderVO = new OrderVO();
				BeanUtils.copyProperties(orders,orderVO);
				String orderDishes = getOrderDishesStr(orders);

				//将订单菜品信息封装到orderVo中,并添加到orderVOList
				orderVO.setOrderDishes(orderDishes);
				orderVOList.add(orderVO);
			}
		}
		return orderVOList;
	}

	/**
	 * 根据订单id获取菜品信息字符串
	 * @param orders
	 * @return
	 */
	private String getOrderDishesStr(Orders orders) {
		//查询订单菜品的详细信息(订单中的菜品和数量)
		List<OrderDetail> orderDetailList = orderdetailMapper.getByOrderId(orders.getId());

		//将每一条订单菜品信息拼接位字符串(格式:宫保鸡丁*2;)
		List<String> orderDishList = orderDetailList.stream().map(x -> {
			String orderDish = x.getName() + "*" + x.getNumber() + ";";
			return orderDish;
		}).collect(Collectors.toList());

		//奖该订单对应的所有菜品信息拼接在一起
		return String.join("",orderDishList);
	}

	/**
	 * 各个订单状态数量统计
	 *
	 * @return
	 */
	@Override
	public OrderStatisticsVO statistics() {
		//根据状态,分别查询待接单,待派送,派送中的数量
		Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
		Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
		Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

		//将查询到的数据封装到orderStatisticsVO中响应
		OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
		orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
		orderStatisticsVO.setConfirmed(confirmed);
		orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
		return orderStatisticsVO;
	}

	/**
	 * 接单
	 *
	 * @param ordersConfirmDTO
	 */
	@Override
	public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
		Orders orders = Orders.builder()
				.id(ordersConfirmDTO.getId())
				.status(Orders.CONFIRMED)
				.build();
		orderMapper.update(orders);
	}

	/**
	 * 拒单
	 *
	 * @param ordersRejectionDTO
	 */
	@Override
	public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
		//根据id查询订单
		Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());

		//订单存在且状态为2才可以拒单
		if (ordersDB ==null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
			throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
		}

		//支付状态
		Integer payStatus = ordersDB.getPayStatus();
		if (payStatus == Orders.PAID){
			//用户已支付，需要退款
			// String refund = weChatPayUtil.refund(
			// 		ordersDB.getNumber(),
			// 		ordersDB.getNumber(),
			// 		new BigDecimal(0.01),
			// 		new BigDecimal(0.01));

			//模拟退款逻辑(替代真实的微信退款)
			String refund = "模拟退款成功: 订单号=" + ordersDB.getNumber() + ", 金额=" + ordersDB.getAmount();
		}

		//拒单需要退款,根据订单id更新状态,拒单原因,取消时间
		Orders orders = new Orders();
		orders.setId(ordersDB.getId());
		orders.setStatus(Orders.CANCELLED);
		orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
		orders.setCancelTime(LocalDateTime.now());

		orderMapper.update(orders);
	}

	/**
	 * 取消订单
	 *
	 * @param ordersCancelDTO
	 */
	@Override
	public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
		//根据id查询订单
		Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

		//支付状态
		Integer payStatus = ordersDB.getPayStatus();
		if (payStatus == 1){
			//用户已支付，需要退款
			// String refund = weChatPayUtil.refund(
			// 		ordersDB.getNumber(),
			// 		ordersDB.getNumber(),
			// 		new BigDecimal(0.01),
			// 		new BigDecimal(0.01));

			//模拟退款逻辑(替代真实的微信退款)
			String refund = "模拟退款成功: 订单号=" + ordersDB.getNumber() + ", 金额=" + ordersDB.getAmount();
		}

		//管理端取消订单需要退款,根据订单ID修改订单状态,取消原因,取消时间
		Orders orders = new Orders();
		orders.setId(ordersCancelDTO.getId());
		orders.setStatus(Orders.CANCELLED);
		orders.setCancelReason(ordersCancelDTO.getCancelReason());
		orders.setCancelTime(LocalDateTime.now());
		orderMapper.update(orders);
	}

	/**
	 * 派送订单
	 *
	 * @param id
	 */
	@Override
	public void delivery(Long id) {
		//根据ID插叙订单
		Orders ordersDB = orderMapper.getById(id);

		//判断订单是否存在,并且状态为3
		if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)){
			throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
		}

		Orders orders = new Orders();
		orders.setId(ordersDB.getId());
		//更新订单状态
		orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

		orderMapper.update(orders);
	}

	/**
	 * 完成订单
	 *
	 * @param id
	 */
	@Override
	public void complete(Long id) {
		//根据ID查询订单
		Orders ordersDB = orderMapper.getById(id);

		//判断订单是否存在,且状态是否为4
		if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
			throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
		}

		Orders orders = new Orders();
		orders.setId(ordersDB.getId());
		// 更新订单状态,状态转为完成
		orders.setStatus(Orders.COMPLETED);
		orders.setDeliveryTime(LocalDateTime.now());

		orderMapper.update(orders);
	}

	/**
	 * 检查客户的收货地址是否超出配送范围
	 * @param address
	 */
	private void checkOutOfRange(String address) {
		Map map = new HashMap();
		map.put("address",shopAddress);
		map.put("output","json");
		map.put("ak",ak);

		//获取店铺的经纬度坐标
		String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

		JSONObject jsonObject = JSON.parseObject(shopCoordinate);
		if(!jsonObject.getString("status").equals("0")){
			throw new OrderBusinessException("店铺地址解析失败");
		}

		//数据解析
		JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
		String lat = location.getString("lat");
		String lng = location.getString("lng");
		//店铺经纬度坐标
		String shopLngLat = lat + "," + lng;

		map.put("address",address);
		//获取用户收货地址的经纬度坐标
		String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

		jsonObject = JSON.parseObject(userCoordinate);
		if(!jsonObject.getString("status").equals("0")){
			throw new OrderBusinessException("收货地址解析失败");
		}

		//数据解析
		location = jsonObject.getJSONObject("result").getJSONObject("location");
		lat = location.getString("lat");
		lng = location.getString("lng");
		//用户收货地址经纬度坐标
		String userLngLat = lat + "," + lng;

		map.put("origin",shopLngLat);
		map.put("destination",userLngLat);
		map.put("steps_info","0");

		//路线规划
		String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

		jsonObject = JSON.parseObject(json);
		if(!jsonObject.getString("status").equals("0")){
			throw new OrderBusinessException("配送路线规划失败");
		}

		//数据解析
		JSONObject result = jsonObject.getJSONObject("result");
		JSONArray jsonArray = (JSONArray) result.get("routes");
		Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

		if(distance > 5000){
			//配送距离超过5000米
			throw new OrderBusinessException(MessageConstant.OUT_OF_DELIVVERY_RANNGE);
		}
	}

	/**
	 * 用户催单
	 *
	 * @param id
	 */
	@Override
	public void reminder(Long id) {
		// 查询订单是否存在
		Orders orders = orderMapper.getById(id);
		if (orders == null) {
			throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
		}

		//基于WebSocket实现催单
		Map map = new HashMap();
		map.put("type", 2);//2代表用户催单
		map.put("orderId", id);
		map.put("content", "订单号：" + orders.getNumber());
		webSocketServer.sendToAllClient(JSON.toJSONString(map));
	}
}
